Abstract In the last experimental campaign (OP1.2b: 7/2018 to 10/2018) of the Wendelstein 7-X stellarator (W7-X), the first of two neutral beam injectors (NBI) was commissioned with 2 plasma sources. The safe operation of the NBI requires the exclusion of hazards to personnel and minimization of system hazards. The NBIcontrol system consists of a standard PLC based on PCS7 from Siemens AG and a separate safety controller based on PNOZmulti from Pilz GmbH. The requirements of the NBI safety control are derived from an analysis of the specific personal and plant hazards in accordance with the international standards IEC 61508 / IEC61511. Particular challenges are the usage of high voltage, open high frequency and high power sub systems, and explosive gases that are distributed over different locations. Firstly, the paper describes the procedure followed by the hazard assessment and for determining solutions for safe operation. Secondly, the paper, describes the hardware structure of the NBI safety system. Lastly details of individual technical solutions, e.g. for access to the high voltage area of the NBI injector, are described.

中文翻译：

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W7-X中性束喷射加热系统安全系统

摘要 在 Wendelstein 7-X 仿星器 (W7-X) 的最后一次实验活动 (OP1.2b: 7/2018 至 10/2018) 中，两个中性射束注入器 (NBI) 中的第一个使用了 2 个等离子体源。NBI 的安全运行需要排除对人员的危害并将系统危害降至最低。NBI 控制系统由一个基于 Siemens AG 的 PCS7 的标准 PLC 和一个基于 Pilz GmbH 的 PNOZmulti 的独立安全控制器组成。NBI 安全控制的要求源自根据国际标准 IEC 61508 / IEC61511 对特定人员和工厂危害的分析。特别的挑战是使用高电压、开放式高频和高功率子系统，以及分布在不同位置的爆炸性气体。首先，该文件描述了危险评估和确定安全操作解决方案所遵循的程序。其次，论文描述了北向安全系统的硬件结构。最后描述了个别技术解决方案的细节，例如用于访问 NBI 喷射器的高压区域。